EP0622485B1 - Vorrichtung zum modulierten Bremsen des Fadens für Schussfadenliefervorrichtungen - Google Patents

Vorrichtung zum modulierten Bremsen des Fadens für Schussfadenliefervorrichtungen Download PDF

Info

Publication number
EP0622485B1
EP0622485B1 EP94105258A EP94105258A EP0622485B1 EP 0622485 B1 EP0622485 B1 EP 0622485B1 EP 94105258 A EP94105258 A EP 94105258A EP 94105258 A EP94105258 A EP 94105258A EP 0622485 B1 EP0622485 B1 EP 0622485B1
Authority
EP
European Patent Office
Prior art keywords
lamina
laminae
thread
movable element
bars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94105258A
Other languages
English (en)
French (fr)
Other versions
EP0622485A1 (de
Inventor
Pietro Zenoni
Giovanni Pedrini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LGL Electronics SpA
Original Assignee
LGL Electronics SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LGL Electronics SpA filed Critical LGL Electronics SpA
Publication of EP0622485A1 publication Critical patent/EP0622485A1/de
Application granted granted Critical
Publication of EP0622485B1 publication Critical patent/EP0622485B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/13—Actuating means linear magnetic, e.g. induction motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a device for the modulated braking of the thread for devices that feed weft to looms or textile machines.
  • weft feeders are devices that are suitable to accumulate a reserve of thread in the form of turns wound around a fixed drum and to feed the loom by unwinding the accumulated turns by an amount equal to the length of thread required by the loom at each beating; this length is equal to the transverse dimension, or height, of the fabric being formed.
  • the thread is subjected to the action of a braking means which is also associated with the weft feeder; the braking means has the purpose of keeping said thread at a preset mechanical tension that is suitable to ensure its correct unwinding.
  • the thread advancement speed varies in an approximately sinusoidal manner, and the action of the braking means, which depends on the friction coefficient between the thread and the braking means, varies accordingly. Consequently, the tension of the thread is subject to considerable and undesirable increases that cause frequent breakage.
  • Electromagnetically operated modulated-braking devices have already been produced for this purpose; in these devices, the braking means is rigidly coupled to a moving element that supports an energization coil immersed in the field of a permanent magnet.
  • the energization coil is supplied with a current that varies in proportion to the thread advancement rate or to its mechanical tension, and this energization current, by interacting with the field of the permanent magnet, modulates the action of the braking means in order to keep the tension of said thread substantially constant.
  • a typical modulated-action braking means of conventional devices is constituted by a rigid body which is pressed with variable force against the drum, or against a portion of the drum, of the feeder; the thread runs between said body and said drum or drum portion.
  • a winder that is located downstream of the drum of the feeder and comprises a series of equidistant fixed rods and a series of equidistant movable rods that are interleaved with the fixed rods and are supported by a movable element that has an energization coil subjected to the field of a permanent magnet.
  • the thread runs between the fixed and movable rods and winds partially around them, forming winding angles that vary according to the movements of the movable rods with respect to the fixed rods produced by corresponding movements of said movable element.
  • a thread braking device comprising electromagnetic positioning means adapted to control a braking system.
  • the electromagnetic positioning means includes a movable element at a center whereof a rod is connected. The free end of the rod drives a movable lamina which is pushed against a fixed lamina opposed thereto, the thread to be braked being interposed between the two laminae.
  • the aim of the present invention is to obviate these drawbacks, and within the scope of this general aim, the present invention has the important and particular object of providing a device for the modulated braking of thread which is structurally simple, can be applied to any kind of existing feeder equipped or not with additional braking means, but is fully independent of the presence and value of an input tension T i .
  • a particular and important object of the present invention is to provide a device for the modulated braking of the thread in which the variation of the braking action is comprised within very wide limits in order to give the device an extensive ability to modulate the braking action.
  • the present invention relates to a weft feeder having a thread breaking device as claimed in claim 1.
  • the ends of each lamina are detachably engaged in radial seats of the respective pairs of supporting bars, and the length of the laminae is chosen so that it is greater than the center distance of said respective pair of bars by an amount that corresponds to the deformation of the lamina and therefore to the selected rigidity.
  • the current for the energization of the coil of the movable element is modulated starting from an initial predefined value Io which can be preset according to the requirements of use; this value corresponds to the maximum braking action, hereinafter termed briefly static braking, applied by the device to the motionless thread.
  • the reference numeral 10 designates a weft feeder of the conventional type that comprises a fixed drum 11 on which a hollow arm 12, rigidly coupled to an equally hollow drive shaft 13, winds a plurality of turns of thread that form a thread reserve RF.
  • the thread F unwinds from a spool, not shown, and passes in the cavity of the shaft 13 and of the arm 12 to accumulate on the drum 11, where a series of rods 14 that have an undulating motion makes the turns advance toward the head of said drum.
  • the thread unwinds from the drum 11 to feed the loom or other textile machine, passing in a thread guide 15 which is arranged coaxially to the drum 11.
  • the thread is first of all braked by a possible first braking means 16 of the conventional type with brushes, constituted by a ring 17 which surrounds the drum 11 and is provided with an internal annular set of bristles 17a that extends radially so as to engage the drum by contact.
  • the purpose of the braking means 16 is mainly to avoid the forming of the so-called "balloon", and its presence is advantageous but not indispensable.
  • the modulated braking device 18 is located after the thread guide 15 and is supported by a bracket 18a.
  • the device 18 essentially comprises a first metal lamina 19 which is supported, at its ends, by a pair of fixed bars 20 which are mutually spaced by an extent "t".
  • the length of the laminae 19 is greater than the extent "t” by which the bars 20 are mutually spaced, so that the lamina, when inserted between said bars, flexes into an arched shape; the convex part of the arc is directed upward (with reference to the drawing), as shown in the figure.
  • the fixed bars 20 are supported by a rigid bracket 21 that lies above a cylindrical cup-shaped container 22.
  • a second metal lamina 23 Above the first lamina 19 there is a second metal lamina 23, the ends of which are supported by a corresponding pair of movable bars 24 which are mutually spaced by an extent "k" which is less than the extent "t” by which the fixed bars 20 are spaced, so that the second lamina 23 is significantly shorter than the first one, for example 40% shorter.
  • the length of the lamina 23 is also greater than the space "k" between the bars 24, so that said lamina fits between the bars by flexing into an arched shape; the convex portion of this arc is directed downward (with reference to the drawing), so that the two laminae 19-23 face one another at their respective convex portions.
  • the difference between the length of each lamina and the corresponding spacing "t" and "k" of the respective pair of supporting bars sets the curvature of the laminae and thus the elastic rigidity of the system.
  • the individual bars of each pair have seats formed by radial slits 25 that detachably receive the corresponding ends of the respective laminae so that they can be easily removed and replaced with other ones having a different length and/or elastic characteristic in order to vary said elastic rigidity of the system.
  • the movable bars 24 and the lamina 23 are rigidly coupled to a movable element 26 which is constituted by a cylindrical case of a material that has a low relative density, for example cardboard or synthetic-fiber fabric, impregnated with polymeric resin.
  • the movable element 26 is fitted, so that it can slide freely, on the cylindrical hub 27 of a permanent magnet 28 which is arranged in the cup-shaped container 22 and with which a toroidal core 29 and an annular disk 30 are associated; said disk 30 delimits, together with the hub 27, an annular gap LT in which the case that constitutes the movable element 26 passes.
  • Said movable element has, at said gap LT, a coil 31 which is supplied with an energization current I that varies in inverse proportion to the variation of the mechanical tension of the thread, so that an increase in said mechanical tension is matched by a decrease in the energization current.
  • an elastic membrane 32 that can be made of rubber or impregnated cardboard and the like or of thin steel plate.
  • the direction of the energization current I is chosen so as to move the movable element 26, in contrast with the elastic action of the membrane 32, in the direction for the mutual approach of the laminae 19-23.
  • the thread F runs between said laminae and is guided by thread guiding rings 33-34 which are aligned on the plane of tangency of the laminae.
  • An amplifier 17 supplies the energization current I, which as mentioned earlier is variable, to the coil 31 of the movable element 26.
  • the amplifier A is driven by a microprocessor ⁇ p that receives in input a signal "s" which is supplied by the loom and is proportional to the change in the speed of an element of said loom, for example the grippers, or by a transducer which is sensitive to the mechanical tension of the thread (strain-gauge), so that said signal is proportional to said mechanical tension.
  • a microprocessor ⁇ p that receives in input a signal "s" which is supplied by the loom and is proportional to the change in the speed of an element of said loom, for example the grippers, or by a transducer which is sensitive to the mechanical tension of the thread (strain-gauge), so that said signal is proportional to said mechanical tension.
  • At least one potentiometer P associated with the microprocessor ⁇ p , allows to set an initial value Io for the energization current which is chosen according to the requirements of use (for example according to the count of the thread F being processed) and corresponds to the maximum braking action applied by the laminae 19-23 to the motionless thread (static braking). Starting from the maximum value Io , the energization current I is modulated downward, so as to reduce the braking action applied by the laminae to the thread as the advancement speed increases and as the mechanical tension of said thread consequently increases.
  • the laminae 19-23 are mutually spaced, for example by an extent equal to 5-10 tenths of a millimeter, so that contact pressure is zero.
  • the lamina 23 is subjected to the elastic action of a spring 35 that acts on the movable element 26 and contrasts against a pin 36.
  • the spring 35 provides a static elastic pressure between the laminae 19-23 even in the absence of the current Io which can be advantageous in some operating conditions and for higher-count threads.
  • An adjustment screw 37 rigidly coupled to the pin 36, allows to vary the position of said pin and accordingly vary the value of said static elastic pressure applied by the spring 35.
  • a spring 38 which reacts on a pin 39 whose position can be adjustable, acts on the movable element 26 to instead provide the maximum static braking pressure in replacement of the pressure applied by the intitial current I o , which is eliminated.
  • the modulated current I' is orientated so as to produce the mutual spacing of the laminae 19-23 starting from the maximum braking value applied by the spring 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (11)

  1. Schußfadenliefervorrichtung mit einer Bremsvorrichtung, aufweisend ein erstes Plättchen (19) und ein zweites Plättchen (23), die einander gegenüberliegend angeordnet sind, wobei ein Paden zwischen ihnen verläuft, dadurch gekennzeichnet, daß die Plättchen (19, 23) jeweils durch ein Paar ortsfester Glieder (20) und ein Paar Glieder (24), welche auf das erste Plättchen (19) zu beweglich sind, getragen werden, wobei die Gliederpaare (20, 24) mit dem Ende der jeweiligen Plättchen in Eingriff stehen und sie in eine Bogenform biegen, wobei die Plättchen mit ihrer konvexen Seite einander gegenüberliegend angeordnet sind, daß die beweglichen Glieder (24) durch ein entsprechendes Element (26) getragen werden, das ebenfalls auf das erste Plättchen (19) zu beweglich ist, wobei das Element (26) elastisch aufgehängt ist und mit einer Erregerspule (31), auf die das Feld eines Permanentmagneten (28) wirkt, versehen ist, und daß Mittel vorgesehen sind, um in die Spule (31) des beweglichen Elements (26) einen Erregerstrom einzuspeisen, der proportional zur Vorschubgeschwindigkeit oder mechanischen Spannung des Fadens moduliert ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Glieder jedes Paares (20, 24) um eine jeweilige Strecke (t, k) beabstandet sind und daß die Länge des entsprechenden Plättchens so gewählt ist, daß sie um einen Betrag, der der für die Plättchen (19, 23) ausgewählten Krümmung entspricht, größer ist als der Abstand der Glieder (20, 24), wobei die Krümmung die elastische Steifigkeit des Systems festlegt.
  3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die einzelnen Glieder (20, 24), die die Plättchen (19, 23) tragen, Aufnahmen aufweisen, die durch radiale Schlitze (25) gebildet werden, welche die Enden der jeweiligen Plättchen herausnehmbar aufnehmen.
  4. vorrichtung nach mindestens einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das bewegliche Element (26) von einem Einsatz gebildet wird, der aus einem Material niedriger relativer Dichte gemacht ist und so eingesetzt ist, daß er frei auf dem Kern (27) des Permanentmagneten (28) gleiten kann, und durch eine Membran (32) aus flexiblem Material elastisch aufgehängt ist.
  5. Vorrichtung nach mindestens einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das bewegliche Element (26) in einem ringförmigen Spalt (LT) des Permanentmagneten (28) gleiten kann, wobei die Erregerspule (31) in dem Spalt angeordnet ist.
  6. Vorrichtung nach mindestens einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß in die Erregerspule (31) des beweglichen Elements (26) ein Strom (I) eingespeist wird, der proportional zur Vorschubgeschwindigkeit oder mechanischen Spannung des Fadens moduliert ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Richtung des Erregerstromes (I) so gewählt ist, daß das bewegliche Element (26) gegen die elastische Wirkung der Aufhängmembran (32) in die Richtung bewegt wird, entlang der sich die gegenüberliegenden Plättchen (19, 23) einander annähern.
  8. Vorrichtung nach den Ansprüchen 6 und 7, dadurch gekennzeichnet, daß der modulierte Strom (I) durch einen Verstärker (17) bereitgestellt wird, der durch einen Mikroprozessor (µP) gesteuert wird, welcher am Eingang ein zur Geschwindigkeit eines Elements des Webstuhls oder zur mechanischen Spannung des Fadens proportionales Modulationssignal (s) empfängt.
  9. Vorrichtung nach den Ansprüchen 1 und 8, dadurch gekennzeichnet, daß sie mindestens ein Potentiometer (P) aufweist, das mit dem Mikroprozessor (µP) verbunden ist und geeignet ist, einen maximalen Anfangswert für den Erregerstrom (I) festzusetzen, welcher der dem Faden durch die einander gegenüberliegenden Plättchen (19, 23) auferlegten maximalen Bremswirkung entspricht.
  10. Vorrichtung nach mindestens einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das vom beweglichen Element (26) getragene Plättchen (23) der einstellbaren Wirkung einer Feder (35) unterliegt, die auf das bewegliche Element einwirkt und geeignet ist, bei Abwesenheit eines Erregerstromes (I), der in die Spule (31) des beweglichen Elements eingespeist wird, einen statischen elastischen Druck zwischen dem ortsfesten Plättchen (19) und dem beweglichen Plättchen (23) zu erzeugen.
  11. Vorrichtung nach den Ansprüchen 1 und 6, dadurch gekennzeichnet, daß das vom beweglichen Element (26) getragene Plättchen (23) der Wirkung einer Feder (35) unterliegt die das Plättchen mit einer Kraft, die der maximalen durch das Plättchen dem Faden auferlegten Bremswirkung entspricht, gegen das gegenüberliegende ortsfeste Plättchen (19) drückt, und daß der in die Spule (31) des beweglichen Elements (26) eingespeiste Erregerstrom so gerichtet ist, daß er die Plättchen (19, 23) gegen die wirkung der Feder (35) trennt.
EP94105258A 1993-04-08 1994-04-05 Vorrichtung zum modulierten Bremsen des Fadens für Schussfadenliefervorrichtungen Expired - Lifetime EP0622485B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO930242A IT1260645B (it) 1993-04-08 1993-04-08 Dispositivo di frenatura modulata del filato per apparecchi alimentatori di trama
ITTO930242 1993-04-08

Publications (2)

Publication Number Publication Date
EP0622485A1 EP0622485A1 (de) 1994-11-02
EP0622485B1 true EP0622485B1 (de) 1997-12-10

Family

ID=11411365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94105258A Expired - Lifetime EP0622485B1 (de) 1993-04-08 1994-04-05 Vorrichtung zum modulierten Bremsen des Fadens für Schussfadenliefervorrichtungen

Country Status (4)

Country Link
US (1) US5398732A (de)
EP (1) EP0622485B1 (de)
DE (1) DE69407210T2 (de)
IT (1) IT1260645B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2031106A1 (de) 2007-08-31 2009-03-04 L.G.L. Electronics S.p.A. Verfahren zur Spannungskontrolle eines Garnes, das von einem negativen Liefergerät an eine Textilmaschine geliefert wird, und Vorrichtung zur Durchführung des Verfahrens

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1282898B1 (it) * 1995-09-20 1998-04-01 Mario Gallo Dispositivo per controllare la tensione di un filo.
IT1277659B1 (it) * 1995-09-27 1997-11-11 Roj Electrotex Nuova Srl Dispositivo di blocco del filo di trama in fase di taglio associabile a porgitrama misuratori
BE1010389A3 (nl) * 1996-06-26 1998-07-07 Picanol Nv Draadrem voor het remmen van een inslagdraad bij een weefmachine.
DE19757608A1 (de) * 1997-12-23 1999-06-24 Iro Ab Fadenliefergerät
DE59910006D1 (de) * 1999-01-12 2004-08-26 Sultex Ag Rueti Vorrichtung zum Abtrennen eines in ein Webfach einzutragenden Schussfadens und Webmaschine mit einer derartigen Vorrichtung
IT1308066B1 (it) * 1999-06-01 2001-11-29 Lgl Electronics Spa Dispositivo di comando di frenatrama, particolarmente per telaidi tessitura e simili
US6286562B1 (en) * 1999-10-26 2001-09-11 L.G.L. Electronics S.P.A. Electro-magnetic lamina type weft brake
IT1310749B1 (it) * 1999-11-30 2002-02-22 Lgl Electronics Spa Metodo e dispositivo di controllo di freni di trama elettrocomandatiper la regolazione automatica della tensione meccanica del filo di
DE10014366A1 (de) * 2000-03-20 2001-10-04 Dornier Gmbh Lindauer Fadenschneidvorrichtung für Webmaschinen
DE102004043867A1 (de) * 2004-09-10 2006-03-16 Iro Ab Fadenbremsvorrichtung
DE102005026234A1 (de) * 2005-06-07 2006-12-14 Iro Ab Fadenliefergerät für Greifer- und Projektilwebmaschinen
EP1918437A1 (de) * 2006-11-02 2008-05-07 Sultex AG Verfahren und Vorrichtung zum Eintragen eines Schussfadens
EP2169099A1 (de) * 2008-09-25 2010-03-31 L.G.L. Electronics S.p.A. Negativer Garnzuführer mit Schussfadenbremsvorrichtung
EP2354070B1 (de) 2010-02-01 2013-01-02 Iro Ab Garnspanner
ITTO20120156A1 (it) * 2012-02-22 2013-08-23 Lgl Electronics Spa Apparato di alimentazione di filato a tensione controllata per macchine tessili, con funzione di recupero del filato.
ITTO20120261A1 (it) 2012-03-22 2013-09-23 Lgl Electronics Spa Metodo di alimentazione/recupero del filato per macchine tessili, ed apparato per l'esecuzione di tale metodo.
ITTO20120487A1 (it) * 2012-06-04 2013-12-05 Lgl Electronics Spa Metodo di controllo della tensione del filato in svolgimento da un alimentatore di trama ad accumulo per macchine tessili.
ITTO20130616A1 (it) * 2013-07-22 2015-01-23 Lgl Electronics Spa Alimentatore di filato munito di tamburo avvolgi-trama e di dispositivo frena-trama controllato in retroazione
ITUB20155266A1 (it) * 2015-10-30 2016-01-30 Roj S R L Freno elettromagnetico pilotato per il controllo della tensione dei fili di trama in macchine tessili
TWI732251B (zh) * 2018-09-27 2021-07-01 義大利商桑德森力瑪集團有限公司 用於無梭子紡織機的緯紗切割裝置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568595B1 (fr) * 1984-08-02 1986-09-05 Alsacienne Constr Mat Tex Dispositif de commande positive pour frein de fil.
CH670116A5 (de) * 1986-04-28 1989-05-12 Univ Kazakhsky
DE3637919A1 (de) * 1986-11-06 1988-05-19 Dornier Gmbh Lindauer Schussfadenbremse mit steuerbarer bremswirkung fuer schuetzenlose webmaschinen
US4875506A (en) * 1987-05-27 1989-10-24 Sulzer Brothers Limited Yarn brake for a weft yarn
US4969489A (en) * 1988-07-14 1990-11-13 Nissan Motor Co., Ltd. Weft threading system for fluid jet loom using the storage drum winding arm
IT1227077B (it) * 1988-09-08 1991-03-14 Vamatex Spa Sistema per controllare la tensione della trama alimentata ad un telaio tessile senza navette.
CH682926A5 (de) * 1991-02-06 1993-12-15 Sulzer Ag Fadenbremse mit elektromagnetisch betätigter Bremslamelle.
US5329962A (en) * 1991-09-03 1994-07-19 Nissan Motor Co., Ltd. Weft supply changing and threading apparatus
IT1251209B (it) * 1991-09-20 1995-05-04 Lgl Electronics Spa Dispositivo di frenatura autoregolante del filato per apparecchi alimentatori di trama.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2031106A1 (de) 2007-08-31 2009-03-04 L.G.L. Electronics S.p.A. Verfahren zur Spannungskontrolle eines Garnes, das von einem negativen Liefergerät an eine Textilmaschine geliefert wird, und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
IT1260645B (it) 1996-04-22
DE69407210D1 (de) 1998-01-22
EP0622485A1 (de) 1994-11-02
ITTO930242A1 (it) 1994-10-08
ITTO930242A0 (it) 1993-04-08
DE69407210T2 (de) 1998-04-02
US5398732A (en) 1995-03-21

Similar Documents

Publication Publication Date Title
EP0622485B1 (de) Vorrichtung zum modulierten Bremsen des Fadens für Schussfadenliefervorrichtungen
EP0534263B1 (de) Selbstregulierende Fadenbremse für eine Schussfadenliefervorrichtung
EP0536088B1 (de) Modulierte Fadenbremse für eine Schussfadenliefervorrichtung
EP0707102B1 (de) Modulierte positive Fadenbremse für Schussfadenliefervorrichtungen
KR100302035B1 (ko) 탄성사를위한사공급장치및사용방법과,그를이용한편물제품
US6322016B1 (en) Thread delivery device and thread brake
KR100292422B1 (ko) 야안 공급기 장치
KR100371989B1 (ko) 제어가능한출력브레이크및발사체또는그리퍼직조기
CZ283776B6 (cs) Podavač útkové niti
EP0330951A1 (de) Fadenliefervorrichtung, insbesondere für Webmaschinen
EP2780271B1 (de) Fadenführer mit speicher und magnetischer bremse
RU2592177C2 (ru) Устройство контроля ленточки основы и круглая ткацкая машина
EP2829647B1 (de) Garnzuführvorrichtung mit Schussfaden-Wickeltrommel und feedbackgesteuerter Schussfaden-Bremsvorrichtung
GB2165557A (en) Yarn brake, particularly for textile machines
US4744394A (en) Weft yarn store for looms
US6418976B2 (en) Thread brake system with a linear electric motor for weaving looms
EP0584099A1 (de) Schussfadenliefervorrichtung für schützenlose webmaschinen.
CS258116B2 (en) Device for auxiliary mechanism diameter changing for thread rewinding
EP2349896B1 (de) Fadenbremse und verfahren zur verwendung der fadenbremse
EP0581745B1 (de) Verbesserung von Schussfadenliefervorrichtungen für pneumatische Webmaschinen
EP1526102B1 (de) Bremsvorrichtung für Schussfäden für Textilmaschinen
EP0884263A1 (de) Selbstregulierende modulierte Fadenbremse für eine Schussfadenliefervorrichtung
GB2102458A (en) Yarn feed device
SU742500A1 (ru) Устройство дл подачи нити
EP1333115B1 (de) Fadenspannungserfassungsvorrichtung für den Faden einer Fadenliefervorrichtung in Textilmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE LI SE

17P Request for examination filed

Effective date: 19950406

17Q First examination report despatched

Effective date: 19950519

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE LI SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ROTTMANN, ZIMMERMANN + PARTNER AG

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69407210

Country of ref document: DE

Date of ref document: 19980122

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080314

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20080416

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20080416

Year of fee payment: 15

Ref country code: DE

Payment date: 20080630

Year of fee payment: 15

BERE Be: lapsed

Owner name: *L.G.L. ELECTRONICS S.P.A.

Effective date: 20090430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090430

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091103

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090406